Home / 1,556.28-2,138.76-1,512.54

Finding the Fourth Proportional to 1,556.28, 2,138.76 and 1,512.54

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Solution

The fourth proportional to 1,556.28, 2,138.76 and 1,512.54 is: 2,078.65

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,556.28 : 2,138.76 = 1,512.54 : x
  2. Step 2: Convert to fraction form
    1,556.28/2,138.76 = 1,512.54/x
  3. Step 3: Cross multiply
    1,556.28x = 2,138.76 × 1,512.54
  4. Step 4: Simplify right side
    1,556.28x = 3,234,960.05
  5. Step 5: Solve for x
    x = 3,234,960.05/1,556.28
  6. Step 6: Final answer
    x = 2,078.65

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Why These Related Problems?

These problems maintain the same ratio (1.37) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.